Question

std8 maths (x+7) (x+7) (multiply the following using appropriate identies​

Answer 1

$\sf \: (x+7) (x+7)$

$= \sf(x + 7 {)}^{2}$

$= \sf {x}^{2} + {7}^{2} + 2 \times x \times 7$

$= \underline{ \boxed{ \sf {x}^{2} + {49} + 14x}}$

Answer 2

$\huge \mathscr{\orange {\underline{\pink{\underline {Answer:-}}}}}$

( x + 7 )( x + 7 )

By Using Appropriate Identity,

( a + b )² = a² + 2ab + b²

( x + 7 )² = x² + 2(x)(7) + 7²

( x + 7 )² = x² + 14x + 49